2002/03/31 by D. N. Aristov, Vadim Cheianov, Vadim V. Cheianov +1
Materials Science · Physics and Astronomy · #Breather #Condensed matter physics #Coulomb #Doping #Drude model #Electrical resistivity and conductivity #Electron #Hubbard model #Materials science #Metal–insulator transition #Mott insulator #Mott transition #Nonlinear system #Optical conductivity #Organic and Molecular Conductors Research #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum and electron transport phenomena #Quantum mechanics #Semiclassical physics #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.66.073105
published as PRB 66, 073105 (2002) · 4 pages, 2 EPS figures, REVTEX 4, a final version
openalex publication_date 2002/08/08 · arxiv created 2002/08/16 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the optical response of a strongly correlated electron system near the metal-insulator transition using a mapping to the sine-Gordon model. With semiclassical quantization, the spectral weight is distributed between a Drude peak and absorption lines due to breathers. We calculate the Drude weight, the optical gap, and the line shape of breather absorption.